---
id: CVE-2026-109351
title: >-
  Gitoxide gix-pack before 0.75.0 contains an uncontrolled memory allocation
  vulnerability that allows remote attackers to abort the process by supplying a
  huge pack-header object count
summary: >-
  Gitoxide gix-pack before 0.75.0 contains an uncontrolled memory allocation
  vulnerability that allows remote attackers to abort the process by supplying a
  huge pack-header object count. Malicious remotes can serve a 12-byte pack
  header cl…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:32.123'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109351'
references:
  - url: >-
      https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-x862-c2wj-4mwr
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/gitoxide-gix-pack-before-0.75.0-denial-of-service-via-pack-header-object-count
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.211Z'
---

## Overview

Gitoxide gix-pack before 0.75.0 contains an uncontrolled memory allocation vulnerability that allows remote attackers to abort the process by supplying a huge pack-header object count. Malicious remotes can serve a 12-byte pack header claiming 0xFFFFFFFF objects, forcing Tree::with_capacity to reserve hundreds of gigabytes and crash clone or fetch operations.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.